Agile software development

Agile software development,agile software development tools, agile software development life cycle, agile software development process, agile software development methodologies,software development process, waterfall model,what are the agile development models,....etc
https://sites.google.com/site/simpleagility/
http://www.agilemanifesto.org/
http://www.agile-process.org/
http://www.vtt.fi/inf/pdf/publications/2002/P478.pdf